Steam-pump



(No Model.) 3 Sheet-Sheet 1.

J. UHRI.

STEAM PUMP.

No. 356,671. Patented Jan. 25, 1887. v

WITNESSES (No Model.) 3 SheetsSheet 2..

J. UHRI.

STEAM PUMP.

No. 356,671. Patented Jan. 25, 1887..

2/ WITNESSES V v .dttomey/ (No Model.) 3 SheetsSheet 3.

J. UHRI. STEAM PUMP.

No. 356,671. Patented Jan. 25,1887.

linrrnn STATES PATENT @rrrcso JACOB UHRl, OF CHICAGO, ILLINOIS.

STEAM-PUM P.

SPECIFICATION forming part of Letters Patent No. 356,671, dated January 25, 1887.

Application filed October 6, 1886. Serial No. 215,479. (No model.)

To all whom iii may concern.-

Be it known that 1, Jason UHRI, a subject of the King of Sweden and Norway, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Steam-Pumps; and I do hereby declare that the following is a full, clear, and exact description of the irr vention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the ac companying drawings, which form a part of this specification, and in which- Figure 1 is a perspective view of my im proved steam-pump. Fig. 2 is a vertical sectional view through the axes of the two cylinders. Fig. 3 is a similar view on line a 5:2,Fig. 2. Fig. 4C is a similar view on lineg 3 Fig. 3; and Fig. 5 is a horizontalsectional view on line 3 c, Fig. .5.

Similar numerals 01' reference indicate cor responding parts in all the figures.

My invention has relation to that class of steam-pumps in which water is raised by the condensation of steam within a receptacle and again forced out by admitting steam into the receptacle; and it consists in the improved construction and combination of parts of such a pump, as hereinafter more fully described and claimed.

In the accompanying drawings the numerals 1 1 indicate two cylinders having steam-pipes 2, extending from their heads into a cylin-,

drical valve-chest, 3, supported above the cylinders. A piston or cylindrical valve, 5, slides and tits within this valve-chest, and is formed with two annular grooves, 4, which may alternately register with two pairs of steam-ports, 6 7 and 6 7, in the lower side of the valve chest, and with two pairs of steam-ports, 8 9 and S 9, in the upper side of the valve-chest. The ports in the lower side of the valve-chest open into the steam-pipes of the cylinders, the ports 6 being the live-steam ports and the ports 7 being the exhaust-ports; and the ports 8 in the upper portion of the valve-chest, near the center of the same,are the live-stca-mports registering with the live-steam ports in the lower side of the chest, and communicating with the live-steam pipe 10, which enters at one side of an enlargement, 11, uponthe valvechest, and is provided with a suitable valve, 12. The ports 9, nearer the ends ofthevalvechest in the upper side of the same, correspond to and register with the exhaust-ports in the under side of the valve-chest, and are continued into exhaust-pipes 13, each of which is provided with a checlovalve opening fromthe valvecliest, as shown at 14, and enters an exhaust-compartment, L3, at the rear of the cylinders, the two compartments being separated by a partition, 16.

' The annular grooves in the valve or piston may alternately register with one set of the live-steam ports and with one set of the eX- haust-ports, one groove registering with a set of one kind,while the other groove registers with a set of the opposite kind, and for the purpose of reciprocating the valve the enlargement of the valvechestis provided with two steamchannels, 17, which enter the bore of the valvechest,onc at each end, and which open at their upper ends in a flat valve-seat, 18, formed in the upper end of the enlargement,and having an ordinary slidesvalve, 19, alternately covering and uncovering the ports of the said channels, the chamber 20 in which the slide reciprocates communicating with the live-steam pipe. It will thus be seen that when theslide is reciprocatcd from one side to the other the live steam will be admitted to one end of the valve, forcing it toward the other end of the valve-chest and changing the flow of the steam to and from the cylinders, the small slide merely acting for the purpose of operating the cylindrical valve.

A roclrshaft, 21, is journaled in the co largement of the valvechest transverse to the same, and is provided with an upwardly-projecting arm, 22, which projects through a suitable recess,'23,in the enlargement, and the upper end of this arm engages the middle of the under side of the small slide, reciprocating the same when the shaft is rocked, and a lever, 24, or balance-bar is secured with its middle to one end of the rock-shaft.

The heads of the cylinders are provided with stuffing-boxes 25, and tubes 26 project downward from the inner ends of these stuffing-boxes, down through the cylinders, and are provided with circular flanges 27 at their lower ends, and rods 28 slide within these tubes, and are provided at their lower ends with circular blocks 29, having, preferably, circular recesses 30 in their under sides.

The upper ends of the rods within the tubes are secured to the lower ends of thinner rods, 31, which pass upthrough the stufiing-boxes in the heads of the cylinders, fitting tightlyin the same, andthe upper ends of these rods are upon headed rods 39, projecting from the branchpipes up through the valve-seats, the said headed rods limiting the play of the valves.

The water-outlets or discharge-pipes 40 for the cylinders open at the bottoms of the same and extend rearward to form upwardly-pro- .jecting valve-seats 41 in the chambers42- formed below the bottoms of the exhaustchambers, the bottoms of the said exhaustchambers forming the tops of the water-chambers, being cast in one piece with them.

The water-chambers have valves 43,playing upon the valve-seats, and the chambers open into a common discharge-pipe, 44, opening,

with its lower end into the chambers and passing up at the middle of the steam-exhaust chambers, opening near the upper end of the same.

The Water-chambers are extended at the sides of thesteamexhaust chambers, forming flat chambers 45, which serve to cool the sides of thetexhaust-chambers by the water raised in the said chambers from the discharge-pipes.

The sides of the cylinders, near their lower ends, are preferably provided with hand-holes 46,through which the valves andreciprocating blocks or weights in the cylinders may be reached, and the top of the exhaust-chambers are likewise provided with a hand-hole, 47, and the sides of the discharge-chambers have hand-holes 48, all the said hand-holes being tightly covered with suitable covers or plates.

\Vhen the pump is to be used, steam is let into one of the cylinders from the steanrpipe andthereupon shutofi" by means of the valve upon the said pipe,when the steam in the cylinder'may condense and thus form a vacuum in the same. The water will be raised in the inletpipe by the vacuum thus created, and if the water is notraisedsufficiently high the first time to enter the cylinder, the steam is let into the cylinder and let out again until one cylinder is filled with water,when the flow of steam is allowed to act undisturbed. Steam will now.

enter the cylinder and drive the water in the same out through the discharge-pipe, where-. upon the balance-bar may be tilted so as to reciprocate the valve and turn the steaminto the water into the cylinder again,'and the steam in the second cylinder will drive the water out of this cylinder, causing the block or weight, n

in the same to overbalance the weight in the first cylinder, which is floated by the water in the same, the balance-bar being thus automatically tilted and the steam alternately distributed to the cylinders.

It will thus be seen that a pump will be producedwhich will slowly raise a large quantity of water to any height,which may be overcome by the pressure of the steam used, and the wa-: ter will be delivered in one continuous stream as the one cylinder will fill whilethe other discharges.

The pump will require verylittle attention,

as there are very few moving parts, and the moving parts of the lpumpare not subjected to any pressure or wear, thecylindrical valve merely serving to distribute the steam to the cylinders, and the slide serving. to distribute steam to the cylindrical valve, and the weights and their rods will besupp orted by the water withinthe cylinders and will move so slowly that there will be but slight wear. or strain upon any portion of the pump.

It will be seen that as the pump is used the exhaust-steam in the exhaust-chambers will be condensed by the cooling effect of: the water passing up between the chambers and at, the

sides of thesame,forming avacuum. withim thesechambers, which will serve to draw the exhauststeam from the cylinders whenlthe steam is cut. off fromv the same,allowing a vacuum to be more quickly formed'withiu the same,and thus causing the pump to workmore speedily and'with more efi'ect.

If the pressure in the exhaust chambers is,

greater than in the cylinders,the check-valves upon the exhaust-pipes will preventany of the:

contentsof the chamber from entering thecyl inders, and the chambers areprovided in their rear walls with outwardlyopening check valves 49,which will admit of the, extra pressure within the chambersibeing relieved, while preventing any air from enteringthe chambers from without.

By having the valve-seats for the inlet-pipes raised above thebottom of thecylindersand' above the outlet-pipes,,the valves cannot; be

obstructed. by sand or similar 7 impurities, which willsettle upon the bottoms of the cyldersand eventually either be cleaned out from the bottoms of the cylinders or carried off with the flow of water through.thepump,the discharge-valves havingalso their seats raised for the samepurpose.

Having thusdescribed my invention,-.I claim and desire to secure byLetters-Patentof the United States- 1. In a.steam-pummthe,combinationof two;

cylinders having inlet and outlet apertures in their bottoms, provided with suitable valves and having steam-pipes entering their heads, a valve for automatically and alternately admitting and exhausting steam to and from the cylinders, and exhaust-chambers communicating with the cylinders through the exhaust pipes and having the water-discharge pipes partly surrounding them, as and for the purpose shown and set forth.

2. In a steam-pump, the combination of two cylinders having valveseats in their bottoms communicating with the inlet-pipe and provided with upwardly-opening valves, means for alternately admitting and exhausting steam to and from the cylinders, exhaust-chambers communicating with the cylinders through the exhaust-pipes and separated by a central partition, dischargepipes extending from the bottoms of the cylinders and having raised valveseats at their other ends, provided with upwardly-opening valves, watenchambers surrounding the said seats and separated from the bottoms of the exhaust-chambers by a parti tion having extensions projecting at both sides of the exhaustchambers, and a dischargepipe opening from the discharge-chambers and extending between the exhaust-chambers near their rear walls, as and for the purpose shown and set forth.

3. In a steam-pump, the combination of two cylinders having raised valve-seats in the cen ters of their bottoms communicating with the inlet-pipe and provided with upwardly-opening valves, exhaust-chambers separated by a vertical partition and located to the rear of the cylinders, discharge-chambers formed at the bottoms of the exhaust-chambers and extending up at both sides of the same and coinmunieating into a vertical dischargepipe extending upward between the exhaust-chamhers in the rear wall of the same, dischargepipes opening from the bottoms of the cylinders and having upwardly-projecting valveseats entering through the bottoms of the dischargechambers, provided with upwardlyopening valves, means for alternately admitting and exhausting steam to and from the cylinders, and exhaust-pipes having valves opening toward the exhaust-chambers and extending from the steam-distributing means to the exhaust-chambers, as and for the pur-" pose shown and set forth.

4. In a steam-pump, the combination of two cylinders having inlet and outletpipes in their bottoms and having steam pipes entering their heads, a cylindrical valve-chest having an enlargement upon its upper side and formed with two pairs of live-steam and exhaust ports in its under side, communicating with the stea-nrpipes, and having live-steam ports entering at the upper side and communicating with a live-steam pipe,and exhaust-ports communicating with exhaustpipes and formed with upwardly-extending channels extending from the ends of the chest to a seat upon the upper side of the enlargement, covered with a casing, a cylindrical valve sliding in the chest and having two annular grooves in its cylindrical face, registering alternately with a set of exhaust-ports and with a set of live-steam ports, and a small slide upon the upper seat having means for reciprocating it, as and for the purpose shown and set forth.

5. The combination of two cylinders having steam-pipes entering their heads, a cylindrical valvechest having two pairs of live-steam and exhaust ports in its under side, and having two live-steam ports at the middle of the upper side, registering with the live-steam ports in the under side, and two exhaust-ports nearer the ends, registering with the exhaustports in the under side, a cylindrical valve sliding in the chest and having two annular grooves registering with aset of exhaust-ports and a set of live-steam ports at the same time, an enlargement upon the upper side of the valve-chest, having steam-cl1annels extending from the ends of the chest to a valve-seat in the top of the enlargement, a slide-valve upon the said seat, and a rock-shaft having means for rocking it and journaled in the enlargement, and having an arm projecting upward in the enlargement, engaging the slide with its upper end, as and for the purpose shown and set forth.

6. In a steam'pump, the combination of two cylinders having inlet and outlet pipes'in the bottoms and having a suitable valve mechanism for admitting and discharging steam to and from the same, a balance'bar secured at its middle to the valve-operating mechanism, tubes extending from the lower ends of stuffing-boxes in the heads of the cylinders and having circular flanges at their lower ends, bars sliding in the tubes and having circular weights or blocks upon their lower ends, and rods secured with their lower ends to the upper ends of the rods and sliding in the stuffing-boxes,and having their upper ends movably connected to the ends of the balance-bar, as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto affi xed my signature in presence of two witnesses JACOB UHBI.

lVitnesses:

CHARLES Enrcnson, WILLIAM Honnwmu. 

